hi, happy new year to all
i have just bought a mk2 4 door 1300 project
i have been trying to start it with no luck
there is petrol getting through but no spark at plugs
there is 12v at the sw end of the coil when ignition on and 12 v at points end
but there is no spark at the points when turned over, they are new points
there is also no spark at coil king lead
have changed coil onto my mk2 mexico and it runs the mex no problem
put the coil from mex onto project still no spark
not sure if condenser could be at fault, cant test as mine is different
the project is a black cap dizzy
any ideas would be appreciated
Edited by Webmaster on 03/01/2010 at 21:36
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Have you got a good earth?
These points do they spark when cranking over with dizzy cap off?
You may have duff points seem to remember a plastic washer problem we had changed for new points it ran fine.
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is the distrib cap ok?, Are the terminal clean, is the rotor are clean and on correctly,and are the HT cables perfect, i.e not broken.
Have you put the points in correctly, not shorting them put?. A new condenser is always a good idea anyway, but swap to see if working.
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My understanding was that the condenser was just there to prevent excessive premature burning/pitting of the points.
So if you remove it completely and then try the engine you can check whether it is at fault and just get a new one at your earliest convenience.
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hi all
the points dont spark when the cap is off and cranking but iff i open the points with screwdriver with ignition on they spark
it has a good earth and cap is ok as are the leads
the condenser is there as u say to prevent overload but its all i can think of at the moment
thanks
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Put either a 12v bulb or test meter across the points.
While cranking, the bulb should light as the points break or get 12v on the meter.
If you don't, must be the points have no gap as you say you get a spark when operating the points manually. Points gap should be set to about 15 thou in old money at the high point of the cam, as I distantly remember.
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I would agree,it sounds like the points are not opening,or possibly not closing.Set them on the heel of the cam,25 thou (0.64 mm),50° +- 2° if you have a dwell meter.Plugs are 25 thou too,static timing 10° BTDC.
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Black cap on distributor means it's a Ford(Autolite/Motorcraft/GPD) distributor not a Bosch-either were fitted-advance slope identical for both mechanical and vacuum-Bosch has a brown cap.Points should be 25 thou. as mentioned above.Ford has internal condenser-Bosch is external.Ford distributor is no longer serviced tho' parts are available.Bosch points 14 thou..
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The capacitor is an essential part of the system, it forms a 'tuned circuit' with the coil and you wont get much of a spark without it. If you open and close or short the points together you should ge a spark that 'cracks' if it just fizzes and is very small the capacitor is open circuit. You should get a spark from the coil just by opening and closing the points manually.
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hi
thanks for the replies
the points are opening as i have done the volt test 12v on opening and 0 when closed still no spark
i have tried another new set and cleaned them still no spark
open points manually with ign on they crack and spark
starter is very slow so maybe its taking the power away from the points, checked voltage at cranking to points its about 12v then 10v
have cleaned all earths and put seperate ones to the body from the battery with jump leads
and its a new battery which starts diesels so plenty of power
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Does this distributor actually spin is the drive ok?
Have you tried a new coil?
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Have you actually checked at the coil output connection for a spark. take the lead out and hold an earthed screwdriver near the metal part of the connection.
Edited by Peter.N. on 04/01/2010 at 19:21
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You could rig the ignition circuit to run off another battery,if you get a spark when cranking it would prove the problem is connected to the starter.If so it would probably be the ballast resistor bypass circuit,if that has gone O/C then there will be no 12v feed when cranking but you will get voltage otherwise.You may find an extra connection on the starter for this,can't remember now and don't seem to have a Haynes for RWD Escort anymore.
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have you checked the cold start resisitor?
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As others have said,this system runs an 8v. coil with 12 v. fed to it when cranking-a seperate feed from the solenoid.There is a built-in resistor in the loom to drop the voltage to the coil to 8v.
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have you checked the cold start resisitor?
It can't be the resistor as there is a spark when not cranking,it will be the bypass circuit from the solenoid whether it be on the starter or seperate.
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Did u sort this mate as I currently have a similar prob and it's driving me mad. I have even bought an electronic ignition dizzy and it's still not sparking.
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